Determinants of sleep quality in the healthy aged: the role of physical, psychological, circadian and naturalistic light variables.
D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000502:physiology* / Q000523:psychology; D002940:Circadian Rhythm / Q000502:physiology*; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D016014:Linear Models; D008297:Male; D012307:Risk Factors; D012890:Sleep / Q000502:physiology*; D007319:Sleep Initiation and Maintenance Disorders / Q000209:etiology; D011795:Surveys and Questionnaires